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Page 1 of 2 <br /> Vicki McCartney [EH] <br /> From : Vicki McCartney [EH] <br /> Sent: Tuesday, April 02 , 2013 4:01 PM <br /> To: 'bmillman@advgeoenv.com' <br /> Subject: RE: 517 West Fremont St, Stockton , CA - Guardino and Crawford <br /> Hi Brian , <br /> Thank you for explaining the cost associated with upgrading the electrical system at the Guardino and <br /> Crawford site at 517 West Fremont Street in Stockton to operate the catalytic/thermal oxidizer associated <br /> with operating the soil vapor extraction and in-situ air sparge systems. I'll need to discuss this with Nuel <br /> Henderson and I hope to have a letter out within the week. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton , California 95205 <br /> Phone: (209) 468-9852 <br /> Email: vmccartneyGDsicehd. com <br /> From: Brian Millman [mailto : bmillman@advgeoenv.com] <br /> Sent: Tuesday, April 02, 2013 11 :51 AM <br /> To: Vicki McCartney [EH] <br /> Subject: 517 West Fremont St, Stockton, CA - Guardino and Crawford <br /> Hello Vicki , <br /> I would like to update you on the status and progress of the remediation system <br /> installation at 517 West Fremont Street, Stockton , CA; I would also like to notify you of a <br /> change to the remediation system equipment. <br /> In May 2012, additional remediation wells were installed at the site; and in June 2012 , <br /> remediation piping was installed at the site. In July 2012 , Advanced GeoEnvironmental <br /> applied for a dedicated electrical service at the site for the remediation equipment from <br /> Pacific Gas & Electric (PG&E). <br /> In October 2012, AGE received a contract from PG&E for the electrical service. The cost <br /> for installing an electrical service at the site was exorbitant, $ 18, 648.01 . The site is <br /> serviced by a series of overhead transformers that supply power to the site and to a <br /> portion of the surrounding residential neighborhood. After speaking with PG&E, it was <br /> determined that due to the heavy electrical load a catalytic/thermal oxidizer exerts on an <br /> electrical service, one of the overhead transformers would need to be replaced with a <br /> larger transformer to accommodate the load of the remediation system while continuing to <br /> supply power to the surrounding residents . And replacing a transformer with a larger one <br /> will require that all three transformers will have to be repositioned and reconfigured . The <br /> exorbitant cost of the service is due to the replacement of the transformer and <br /> 4/2/2013 <br />